Emroy – Print and Design

A Series

ISO paper sizes (The “A” Series) are all based on a single aspect ratio of square root of 2, or approximately 1:1.4142. The base format is a sheet of paper measuring 1 m² in area (A0 paper size). Successive paper sizes in the series A1, A2, A3, and so forth, are defined by halving the preceding paper size. The most frequently used paper size is A4 (210 × 297 mm).

A0 – 841 × 1189mm
A1 – 594 X 841mm
A2 – 420 x 592mm
A3 – 297 × 420mm
A4 – 210 × 297mm
A5 -148 × 210mm
A6 – 105 × 148mm
A7 – 74 × 105mm
DL – 99 x 210mm

Envelope Sizes

A C sized envelope will fit, without any folds, the corresponding number in the “A series”, whereas a DL envelope will fit a standard DL sized sheet (An A4 Folded 2 times).

C3 – 324 × 458mm
C4 – 228 × 324mm
C5 – 162 × 229mm
C6 – 114 × 162mm
C7 – 81 × 114.9mm
DL – 110 x 220mm